I may be wrong, but I think the main reason to test docstrings and especially the examples folder is to ensure that the documentation is correct and up to date.
The unit tests as in "TDD" are in the test folders. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.